Black Chrysler 426, 440 Pro-Billet Distributor All The Performance Of Our Pro-Billet Line Now Available With Black Cap For Your Big Block Chrysler. Must Be Used With 6, 7, Or 8-Series MSD IgnitionDifferent springs and stop bushings are supplied so you can tune an advance curve to match your application. Must be used with an MSD 6, 7 or 8 series ignition. MSD Pro Billet Distributors are the finest performance and racing distributors available. Every feature has been engineered to endure the rigors of high performance and racing engines. Whether cruising the streets or racing stock cars, dragsters, boats or trucks, MSD has a distributor for it.